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Here are some examples of heat energy. 1  The biggest example of heat energy in our solar system is the sun itself. 2  The sun radiates heat to warm us up one the planet earth. 3  When the burner of a stovetop is very hot, it is a source of heat energy.
The heat from this cup of hot water produces steam. noun. The definition of heat is a form of energy that causes a difference in temperature, or the perception of warmth. An example of heat is hot water. Heat is defined as to add warmth to something. An example of heat is bringing a kettle of water to a boil.